Path Traversal in IBM I

CVE-2026-18515

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to place files into the file system with Navigator for i when they should be blocked by Navigator configuration. This could allow attackers to upload files onto the system to places the Navigator support did not intend, but only if the profile could already do that by itself.

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

  • Ibm I — versions 7.3, 7.4, 7.5

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-18515?
CVE-2026-18515 is a medium-severity vulnerability in IBM I, classified under Path Traversal. CVSS score: 4.3/10. Published 2026-09-14.
How severe is CVE-2026-18515?
Medium severity. CVSS v3 base score is 4.3 out of 10.